I’m Freaking Out 😭

I start my new job tomorrow and I’m freaking out because I have problems with my hips/lower back and for some reason my back started hurting late last night and today it is really bad. I can barely move so I don’t know how I am going to successfully get through a day of work. It hurts to walk, stand, sit, and lay down. Of course I’m going to go but I don’t want it to be a thing where I’m causing a problem my very first day. It’s so bad that I don’t think I’ll be able to successfully pretend I’m not in pain and I just don’t want anyone to find out. What should I do? What should I be doing today to make my back better as fast as possible? I’m freaking out. 😭